10 years ago or so, John Montana created this fly. It has remained popular among carp enthusiast. John’s old blog is still up, if you want to check that out, you can find it here: https://carponthefly.blogspot.com
John has caught tons of carp and his latest photos you can find on his Instagram account here: https://www.instagram.com/johnmontanacarp/
If you are fly fishing for carp, this is a good fly to check out. I would also recommend you read John’s old blog to soak in some information about how he fly fishes for carp.
As far as the hook specified in the below recipe. There are many other carp fly hooks available now. Gamakatsu and Fulling Mill come to mind right away.
Recipe:
Hook: CarpPro Gaper, size 8
Thread: 70 Denier, rusty brown
Eyes: Hareline small black brass eyes
Tail: Ultra Chenille, standard wine
Body: Peacock chenille
Hackle: Pheasant rump, yellow